Data provided by DuPont Packaging Polymers.A polyester film with a vacuum deposited layer of aluminum on one side and overcoated on both sides with a heat sealable PVDC copolymer. The film has excellent oxygen, moisture, and light barrier properties. It is available in 50 and 100 gauge. Can be used in plain and structured form to package snacks, candy, nuts, pharmaceuticals, dry chemicals, and other materials that require protection from moisture, oxygen, and light.